Minor fix for compilation as C++20

src/D3D12Sample.cpp

diff --git a/src/D3D12Sample.cpp b/src/D3D12Sample.cpp
index e6a410a..40b8185 100644
--- a/src/D3D12Sample.cpp
+++ b/src/D3D12Sample.cpp
@@ -41,7 +41,7 @@
     #else

         extern "C" { __declspec(dllexport) extern const UINT D3D12SDKVersion = D3D12_SDK_VERSION; }

     #endif

-    extern "C" { __declspec(dllexport) extern const char* D3D12SDKPath = u8".\\D3D12\\"; }

+    extern "C" { __declspec(dllexport) extern const char* D3D12SDKPath = ".\\D3D12\\"; }

 #endif

 

 enum class ExitCode : int